Xamarin Cross platform mobile app

Please read thru end , understand and then respond. Please only provide relevant info about this project in your response. We have a Xamarin (latest MS Vis Std) mobile cell project that should provide.... 1. Cross platform 2. Interface with Google maps on cell – extract current Lat/long location, nearest building name, speed and display on the form. 3. Measure distance of an object in center view from cell camera, once calibrated. 4. Sample to show how to control various available functions of all cameras of the cell. (focus, on/off, etc. all possible functionality) 5. The Horizontal Gaze Nystagmus test (both in daylight & night ) - This will be recorded by user holding cell phone away and moving a black slider left & right on cell app in front of user, instead of stylus shown in video below. Also record, store the video. Analyze and report results as per the video using video analytics. [login to view URL] Horizontal Gaze Nystagmus: The Truth is in the Eyes - Bing video If some adjustments need to be made to above spec, please advise. A couple of hours of tech transfer, user manual will be needed. Let me know if you have any questions. All the source code , supporting documents, industry typical code comments, will be our property. If you like to share your other experience, capabilities, we shall allow you time later on, just for that. Right now, limit response to this job only. Our budget figure is just a placeholder, so please submit your best price and delivery. No upfront. If milestones desired by you, please submit details. Else, it will be single payment at end. Milestones released after getting source code developed till that time and related docs. If delivery not specified, we shall assume 2 weeks ARO. Serious persons only. Time is of essence.